STANDARDPhysics-Current Electricity
STANDARD Physics Combination of Resistors MCQ Question
Type: MCQ-numerical-Medium-Class 12
Two resistors of resistances R₁ = (300 ± 3)Ω and R₂ = (500 ± 4)Ω are connected in series. The equivalent resistance of the series combination is
A
(800 ± 1)Ω
B
(800 ± 7)Ω
C
(200 ± 7)Ω
D
(200 ± 1)Ω
Correct Answer
Option B
Detailed Explanation
The equivalent resistance of series combination is Rₛ = R₁ + R₂ = 300 Ω + 500 Ω = 800 Ω. The error in equivalent resistance is given by R = (ΔR₁ + ΔR₂) = (3 + 4) Ω = 7Ω. Hence, the equivalent resistance along with error is (800 ± 7) Ω.
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